הלכה על ויקרא 1:6

From the laws of the commandment is that which they, may their memory be blessed, said about the procedure of the burnt-offering that it was executed thus: We slaughter the beast in the [Temple] yard - and the slaughter is fit even with non-priests, but from the reception of the blood and onward, it is a commandment of the priesthood. And the priest would sprinkle the blood and flay it and dissect the limbs whole - as it is written (Leviticus 1:6), "into sections," and they, may their memory be blessed, explained (Chullin 11:1), "And not sections into sections." And when he dissects [it], he removes the sciatic nerve from the thigh, and incinerates all of the sections on top of the altar. And the wool on the heads of the sheep, the hair of the beards of the male goats, the bones, the tendons, the horns and the hooves - when they are attached - we incinerate it all, as it is stated (Leviticus 1:9), "and the priest incinerates it all." [But if] they were separated, they do not go up, as it is stated (Deuteronomy 12:26), "And you shall execute your burnt-offerings, the meat and the blood."